These are miscellaneous pictures drawn by sisak. Why only miscellaneous? Well, Sisak does a lot of fanfic/cg collections, but often I've only liked one or a few images out of said fic/cg collection and thus saved only these rather than the whole if it...
With the exception of the pics of Luna and Cagalli, I don't know whether any of the others are fanart or strictly original...
And now for the usual speech: These are taken from the homepage of an artist who is, I think, called Sisak. His homepage can be found here:
http://go.f-cc.com/~sisak/
Though it should be noted that the page has been down for a while now. Should it be be back online though, be advised that he seems to take his stuff on and off his site on a whim, so it might be a good idea to grab any of his stuff you like before that happens ;) .